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Old 06-01-2013, 09:06 PM   #46
McCormack
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Cool read Dagofast. He'll remember an adventure like that forever.
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Old 06-02-2013, 04:28 PM   #47
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Busy today making it a shiny thing. I'll try to get the post of the road trip up next week sometime.

[IMG][/IMG]
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Old 06-04-2013, 08:39 PM   #48
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2slow failed the 3rd portion of its emissions test today. It had a high NOX reading, about double the limit. No CEL light is on, it runs great, mileage is about 26 city, 31 highway.

Any ideas from the VW cognoscenti?
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Old 06-04-2013, 11:11 PM   #49
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Originally Posted by Dagofast View Post
2slow failed the 3rd portion of its emissions test today. It had a high NOX reading, about double the limit. No CEL light is on, it runs great, mileage is about 26 city, 31 highway.

Any ideas from the VW cognoscenti?
Nothing VW-specific, but here's a discussion that might lead to a way to pass the test:

http://www.eng-tips.com/viewthread.cfm?qid=44564
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Old 06-08-2013, 03:33 PM   #50
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We finally had a chance today to start looking at the emissions problem. I found 2 bad vacuum hoses, one that had a leak and one that held vacuum even when I took my finger off the open end after using the MityVac to create about 10 inches of vacuum. We changed every bit of vacuum hose we could find. I now fully understand the strangeness of german rubber.

I also couldn't get the EGR valve to open with the car hot and idling when I put a vacuum load on it with the MityVac. It wouldn't hold any vacuum even with new hose and furious pumping. Plus the idle speed never changed so I suspect the diaphragm is bad. GAP, BAP and Autozone are all showing these suckers in the $300 range!?

Anyone recommend a cheaper source? Junkyards?
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Old 06-08-2013, 05:00 PM   #51
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It's 18 years old. $300 sounds like a lot of money, but you'll probably have to do it only once.

I looked at Rock Auto. They list a Euro-only part at $140, but your ride might not pass emissions with it. And it says it's for ADY and AGG engine codes, which your 2.0 might not be.
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Old 06-08-2013, 05:16 PM   #52
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Yeah, we keep seeing a cheaper EGR valve listed, but it does not look the same. His little beastie has an ABA engine code, so the unit from RockAuto is a no go. It looks like he will be asking for extra hours at Wendy's to pay for this part. Or moving out of the city where emissions testing isn't required.
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Old 06-08-2013, 06:46 PM   #53
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It looks like he will be asking for extra hours at Wendy's to pay for this part.
He's 16, right? Wendy's may not be able to bump his hours by much without running afoul of labor law. Maybe the daily and weekly hours limits don't apply during summer.
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Old 06-09-2013, 10:02 AM   #54
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It is all part of the ownership experience. It is a good lesson "cars cost and must budget for repairs."
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Old 06-09-2013, 10:57 AM   #55
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It is most likely the same EGR valve for all ABA engines.
Should be tons of them at the junkyards. Every 4 cyl MK3 Jetta or Golf.
You can use this link to cross check part numbers.
http://www.vagcat.com/epc/
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Old 06-09-2013, 02:57 PM   #56
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It is most likely the same EGR valve for all ABA engines.
Should be tons of them at the junkyards. Every 4 cyl MK3 Jetta or Golf.
You can use this link to cross check part numbers.
http://www.vagcat.com/epc/
Can valve movement under vacuum be detected with the valve mounted to the engine? If so, that makes finding a good used candidate easier. If not, that makes finding a good used candidate a potential exercise in futility, assuming the yard will even let you go out there with a MityVac and a set of wrenches.

If the diaphragm is visible at all, maybe it just has a pinhole in it that can be sealed temporarily with some high-temp RTV.
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Old 06-09-2013, 03:19 PM   #57
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Originally Posted by SilkMoneyLove View Post
It is all part of the ownership experience. It is a good lesson "cars cost and must budget for repairs."
Yep. He might as well learn this lesson now instead of later.
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Old 06-09-2013, 03:20 PM   #58
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Originally Posted by boardrider247 View Post
It is most likely the same EGR valve for all ABA engines.
Should be tons of them at the junkyards. Every 4 cyl MK3 Jetta or Golf.
You can use this link to cross check part numbers.
http://www.vagcat.com/epc/
Added to my bookmarks and signed up so I can view it. Great idea.
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Old 06-09-2013, 03:29 PM   #59
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Can valve movement under vacuum be detected with the valve mounted to the engine? If so, that makes finding a good used candidate easier. If not, that makes finding a good used candidate a potential exercise in futility, assuming the yard will even let you go out there with a MityVac and a set of wrenches.

If the diaphragm is visible at all, maybe it just has a pinhole in it that can be sealed temporarily with some high-temp RTV.
This unit does not have an open diaphragm case, so no patching it or even seeing it move. I know his isn't working because I used a new piece of vacuum tube connected directly to the MityVac and it wouldn't build any vacuum and his idle never changed a bit. Testing a junk yard unit would require at the very least putting a vacuum load on it and maybe listening for it to open. If that works, then removing it from the engine for further inspection.

A junkyard unit might be worth a shot. Providing they let me test one first. And providing I can do it early before it hits 110 degrees.

Thanks to each of you for the ideas!
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Old 06-09-2013, 04:29 PM   #60
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Hi Dagofast--

I apologize for the intrusion into your thread but as it contains the two letters "VW" I cannot help but stop by.

I have owned a few B4 Passat platforms (along with numerous B1, B2, B3 and B5/5.5 cars too) and I can tell you that you have started out in the right light by doing the timing belt/tensioner/water pump service right off of the bat.

As far as good local resources for parts I would strongly suggest that you look to Affordable German here in Phoenix for good used parts on the vintage watercooled stuff. If you call down there ask for Bill (the owner) or perhaps ask for a technician by the name of Dan for assistance in locating that part.

If that doesn't work call Chapman on McDowell and ask for the wholesale parts manager (Geoff) and in both cases let them know that Paul with the Syncro Tristar referred ya. There are quite a few good local resources I can extend to you locally as well as elsewhere in the country to keep your mom's car (now your son's car) on the road.
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